integerLessThan(_:)
Returns an integer contained in self which is less than integer, or nil if a result could not be found.
Declaration
func integerLessThan(_ integer: IndexSet.Element) -> IndexSet.Element?Returns an integer contained in self which is less than integer, or nil if a result could not be found.
func integerLessThan(_ integer: IndexSet.Element) -> IndexSet.Element?